Mary purchased four tires by mail order Sshe paid she paid $$61\mathrm{.}50$ per tire plus $$5\mathrm{.}90$ per tire for shipping and handling. There is no sales tax, because the tires were purchased out if state. she also had to pay $$8\mathrm{.}07$ per tire for mounting and balancing. at a local store marys total for the $4$ tired with mounting and balancing would be $$365$ plus $8\%$ sales tax. how much did mary save by purchasing the tires through the mail?